Embedded Platform​/Multi-Core Performance Engineer Phoenix, AZ

Senior Embedded Platform / Multicore Performance Engineer

Phoenix, AZ

Join the elite team at QDSS, where our engineers are at the forefront of developing cutting‑edge Aerospace, Defense, Space, and Medical Device products. Your work will make a real impact, contributing to the core of engineering solutions that drive technological advancements.

Quest Defense Systems & Solutions is seeking a Senior Embedded Platform / Multicore Software Engineer to support the development, certification, and performance optimization of platform software for advanced avionics display systems. This role will focus on multicore processor architectures, deterministic execution, Worst‑Case Execution Time (WCET) analysis, shared resource management, and real‑time operating system technologies within complex embedded aerospace systems.

The ideal candidate will bring extensive experience with multicore embedded platforms, processor and memory architecture, RTOS‑based development, and performance analysis in safety‑critical environments. This individual will work closely with software, systems, graphics, and hardware engineering teams to evaluate shared resource usage, analyze interference channels, support deterministic execution strategies, and contribute to certification readiness for advanced avionics platforms.

Experience working within DO‑178B/C software development environments is required. Practical experience with DEOS or an equivalent safety‑critical RTOS is strongly preferred, especially experience involving cache partitioning, resource isolation, and multicore performance management. Familiarity with AC 20‑193 guidance for multicore processor certification and/or TSO‑C153a is highly desired.

Hybrid work in Phoenix, AZ is preferred; however, qualified remote candidates will be considered. U.S. Citizenship or U.S. Permanent Resident status is required.

• Design, develop, integrate, and support platform software for safety‑critical embedded avionics systems operating in multicore environments.
• Analyze multicore processor behavior, shared resource usage, and system‑level performance across CPUs, GPUs, memory subsystems, I/O, FPGAs, storage devices, and other integrated hardware resources.
• Evaluate processor and memory architecture considerations, including cache hierarchy, memory controllers, DDR/main memory systems, and shared memory access across multiple cores.
• Perform or support Worst‑Case Execution Time (WCET) analysis with consideration for interference from GPUs, I/O subsystems, SSDs, FPGAs, and other shared resources.
• Utilize performance counters, Quality of Service (QoS) mechanisms, and other monitoring approaches to assess shared resource utilization and performance impacts.
• Develop and support deterministic execution strategies, including cache partitioning, resource isolation, and resource management within RTOS‑based environments.
• Support DEOS or equivalent RTOS configuration, integration, troubleshooting, and performance optimization activities.
• Collaborate with software, systems, graphics, and hardware teams to identify and resolve platform‑level performance issues and multicore interference concerns.
• Support software verification, validation, documentation, and certification activities in accordance with safety‑critical aerospace development processes.
• Participate in architecture reviews, technical trade studies, multicore performance assessments, and certification planning discussions.
• Develop technical documentation and engineering artifacts supporting platform design, performance analysis, and certification objectives.
• Provide technical guidance to engineering teams on multicore platform behavior, RTOS performance, shared resource management, and deterministic execution.

• Bachelor’s degree in Computer Engineering, Computer Science, Electrical Engineering, or a related technical discipline.
• 10+ years of experience developing software for embedded, real‑time, or safety‑critical systems.
• Strong programming experience in C and/or C++ within embedded software environments.
• Experience with DEOS, partitioned real‑time operating systems, or other safety‑critical RTOS platforms…